105results about How to "Avoid short circuit damage" patented technology

The invention relates to a signal isolation grid circuit. An existing product only can realize an isolation effect or a surge protection effect. The signal isolation grid circuit comprises an automatic switching circuit, an interface circuit, an isolation power circuit, two surge protection circuits and two high-speed optocouplers; the automatic switching circuit comprises an AND gate chip, a NOT-AND gate chip, two RS-485 chips, four pull-up resistors, three pull-down resistors, matching resistors, a delay capacitor, a filter capacitor and a PNP-type triode; and the isolation power circuit comprises three isolation power sources, filter capacitors, matching resistors, a current limiting resistor, a delay capacitor, a TVS (transient voltage suppressor) diode, a PNP-type triode, a PMOS (P-channel metal oxide semiconductor) transistor, a light-emitting diode, a self-healing fuse and a gas discharge tube. The signal isolation grid circuit has the advantages that the three isolation power sources respectively supply power for a signal circuit at an intrinsic safety end, a signal circuit at a non-intrinsic safety end and a power circuit at the intrinsic safety end, complete isolation is implemented, and surge protection for the intrinsic safety end and short-circuit protection for power output ends are realized.

The invention provides a boron-doped garnet type cubic phase structural LLZO lithium ion conductor. The structural expression formula of the boron-doped garnet type cubic phase structural LLZO lithium ion conductor is Li7La(3-x)BxZr2O12, wherein the x is 0.2 to 0.6. The boron-doped garnet type cubic phase structural LLZO lithium ion conductor has relatively high ionic conductivity and has good electrochemical stability on metallic lithium, can be used as a solid electrolyte of an all-solid-state lithium battery or a lithium ion battery, and can also be used as the solid electrolyte of a metallic lithium-air or metallic lithium-sulphur battery.

The invention discloses a device and method for protecting the power switching tube of an inverter through software and hardware combination. The protection device comprises an overcurrent detection circuit and a control circuit. The overcurrent detection circuit conducts hardware protection to the power switching tube. If the overcurrent of the power switching tube is detected within time of onedriving pulse, the power switching tube is rapidly shut off and a counting signal is transmitted to the control circuit at the same time; and the control circuit conducts software protection to the power switching tube, receives the counting signal of the overcurrent detection circuit to record the times of hardware protection and determines whether the operation of the inverter is stopped or notaccording to load ratio, the temperature of the power switching tube and the time interval of the hardware protection. The method is based on the device and can realize the protection of the power switching tube of the inverter. The device and the method provided by the invention have the advantages that the power switching tube can be sensitively and effectively prevented from being short-circuited and damaged, the detection errors can be avoided, the power switching tube can be prevented from being overheated and damaged when the load is under the impact of periodic large current, and the service life of the power switching tube can be prolonged.

The invention relates to a safe and reliable electric vehicle charging device, which includes a base, a pile body, a storage mechanism, charging wires, a charging mechanism, a card reader, a display screen and a plurality of keys. The storage mechanism includes a lifting assembly, a lifting plate, a guiding assembly and a plurality of guiding pipes, the guiding assembly includes a plurality of guiding units, each guiding unit includes a guiding wheel and a fixing shaft, the charging mechanism includes a supporting assembly, a supporting plate and a protective shell, and a telescopic assembly,a telescopic plate, a connecting assembly, a charging gun, a sealing plate and a magnet are arranged in the protective shell. According to the safe and reliable electric vehicle charging device, the storage mechanism facilitates storage and arrangement of the charging wires after completion of charging, the charging wires are prevented from being in contact with the ground and wearing with the ground, furthermore, the charging gun is conveniently driven to move through the charging mechanism, car charging is more convenient and labor saving, after charging, the charging gun is collected into the protective shell to avoid being wet by rainwater and causing short-circuit damage, equipment is safer and more reliable, and the practicability of the equipment is achieved.

The invention discloses a latch accident check circuit for satellite microprocessor, composed of a DSP processor U1, a voltage comparer U2, and a power switch U3, wherein the power switch U3 provides a power supply to the satellite microprocessor, the DSP processor U1 outputs an on / off command f1 to control the power switch U3, while the f1 is used to cut off power supply when the satellite microprocessor has latch accident to avoid short circuit of the satellite microprocessor caused by large current, and when the power switch U3 powers the satellite microprocessor, the output current sample signal via a sample resistance R5 outputs a sample voltage f2 to the voltage comparer U2 which processes differential comparison on the received sample voltage f2 and a reference voltage f0, to output a digit logic signal f3 to the DSP processor U1.

The invention discloses an in-operation power transformer short circuit resisting ability comprehensive evaluation method. The method comprises the following steps: 1, evaluating an operation condition: evaluating in-operation transformer winding short circuit resisting ability accumulative effect from four factors including operation life limit, short circuit impact duration, short circuit impacttimes and short circuit impact current size; 2, winding deformation related test evaluation: evaluating transformer winding deformation condition through a low voltage impedance method, a frequency response method and an inter-winding capacitance measurement method; 3, checking in-operation transformer short circuit resisting ability; 4, performing comprehensive analysis according to evaluation results of the steps 1-3. The method provided by the invention solves technical problems in the prior art, for example, in the prior art, in the in-operation power transformer short circuit resisting ability comprehensive evaluation, actual operation conditions and periodic preset condition influence factors are not considered, when an in-operation old transformer cannot obtain structure parameters, evaluation thoughts and methods are not given.

The invention provides a bottle drying and disinfecting storage box for a chemical laboratory. The bottle drying and disinfecting storage box for the chemical laboratory comprises ultraviolet lamp tubes, a water collecting cover, a bottom air guiding plate and a water receiving tank. Each sliding frame is formed by joint combination of four transversely arranged supporting rods which are arrayed at equal intervals and two long striped sliding rods, wherein the long striped sliding rods are symmetrically locked and connected to the left and right ends of the four transversely arranged supporting rods through screws; semi-cylindrical sliding strips are arranged at the bottoms of the long striped sliding rods in a protrusive mode respectively; three long striped supporting plates which are arrayed up and down are welded to the left and right inner walls of a box body at equal intervals, the three sliding frames are correspondingly and slidingly supported on the tops of the supporting plates on the left and right sides through the long striped sliding rods on both sides, and correspondingly three glass bottle holders are slidingly pushed and plated in the box body. Through arrangementof the bottom air guiding plate, the Y-shaped bottom air guiding plate and two top air guiding plates can shunt heated air blown out from two air cylinders and change the flow direction of the heatedair, so that the heated air is blown upwards to conduct quick drying of glass bottles.

The invention discloses a vehicle charging pile charging wire take-up device with charging wire protecting and cleaning functions. The vehicle charging pile charging wire take-up device with the charging wire protecting and cleaning functions structurally comprises a charging controller, a charging head storage box, a storage box cover, a charging machine seat, an impurity collecting case and a base. The charging machine seat is a cuboid, and the base is buckled to the bottom end of the charging machine seat. When the vehicle charging pile charging wire take-up device is used, firstly, the device is provided with a protecting wire jacket, the using part of a wire body of a charging wire is wrapped by one layer of protecting jacket when stretching out in the using process, and thus the bodyof the charging wire can be prevented from being abraded, electric leakage and electric shock hazards caused by abrasion can be better prevented, and since the protecting jacket is buckled to the outer side of a skin layer, the protecting jacket is convenient to replace after being abraded, and inconvenient dismounting of the charging wire is avoided; and secondly, the device is provided with a stopping block and a cleaning brush, the protecting jacket and the charging wire can be cleaned when taken up, and thus the device is cleaner in the using process, and inconvenience such as short circuit damage caused by corrosion, impurities and dirt can be better prevented.

The invention discloses a Mini LED device packaging method and a Mini LED device packaging structure, and aims at solving the problems of large size, low light-emitting uniformity and incapability offlexibly controlling a light-emitting angle caused by packaging an LED device by an existing packaging technology. The light-emitting uniformity of the LED device is improved by coating the surface ofa Mini LED chip with a glue material mixed with fluorescent powder particles for compression molding. The problem that an LED device packaged through an existing packaging technology is low in light-emitting uniformity is solved. Through arrangement of a first adhesive layer and a second adhesive layer, the problem that the packaging size is too large in the existing packaging technology is solved, and meanwhile, through the arrangement of the first adhesive layer and the second adhesive layer, the problem in the light-emitting angle of an LED device packaged in the existing packaging technology is solved; and through arrangement of a movable bottom cover plate, the interior of a base can better exchange heat with the outside, the LED device is prevented from being damaged by high temperature, and the service life of the LED device is prolonged.

The invention belongs to the technical field of integrated chip testing, and particularly relates to chip testing equipment applied to an integrated circuit, which comprises a fixed plate, a central control mechanism is fixedly connected to one side of one side, far away from a power distribution cabinet, of the fixed plate, and a chip simulation driving mechanism is fixedly connected to the middle of one side, close to the central control mechanism, of the fixed plate. One end of the chip simulation driving mechanism is electrically connected with an operation device through a transmission data line, and the mobile end of the mobile positioning mechanism is fixedly connected with a mobile pin clamping plate; the test chip can work at different temperatures to test the performance of the chip, so that the test equipment does not need to change the model of the equipment when testing chips with different sizes and models; a chip testing method applied to an integrated circuit comprises the following steps: respectively adjusting the temperatures to zero DEG C, 20-35 DEG C and 35-50 DEG C through a temperature adjusting device for testing, and respectively recording the running speeds of a tested chip at different temperatures and the time when the tested chip rises to the highest temperature.

The invention relates to a multi-connected single lithium battery pack packaging technology, which is composed of a module housing, a multi-connected single lithium battery basic unit and a multi-layer circuit board, wherein the multi-connected single lithium battery basic unit is composed of a double-layer lithium electric core shell, cylindrical lithium electric cores and an aluminum-plastic film; a multi-connected single battery inner shell is punched with cooling liquid inlet and outlet holes and cylindrical lithium electric core shells arranged in a grid manner and then nested and sealedwith a multi-connected single battery outer shell to form he double-layer lithium electric core shell, the shells are injected with a cooling liquid therebetween to serve as a cooling liquid circulation pipeline; the lithium electric cores are installed in the punched cylindrical lithium electric core shells, the openings of the lithium batteries are packaged by the aluminum-plastic film, and thealuminum-plastic film further plays a role of a lithium battery safety valve; the module housing provides an installation space and insulation isolation for the multi-connected single lithium batterybasic unit; and the multi-layer circuit board is installed on the modular multi-connected single lithium battery basic unit and performs series-parallel connection on the battery pack, the top layer of the circuit board is integrated with an BMS management circuit, and the bottom layer is integrated with a temperature sensor.

The invention relates to a safe and reliable ground penetrating radar device for mineral exploration. The device comprises a bottom plate, a workbench, a processor, an operation panel, a display screen, a shielding mechanism, a detection mechanism, four support legs and four rollers, wherein the detection mechanism comprises a lifting component, a lifting platform, a transmitter, a receiver and anisolation component; the isolation component comprises two isolation plates and two driving units; the shielding mechanism comprises a top plate, a back plate, a shielding component and two side plates; and the shielding component comprises a baffle plate, a rotating unit and two supporting units. The safe and reliable ground penetrating radar device for mineral exploration surveys underground coal seam distribution through detection mechanism, utilizes the isolation plates to avoid the damage of the transmitter and the receiver after the transmitter and the receiver are directly contacted with the ground, and ensures the safe operation of the equipment, and furthermore, the safe and reliable ground penetrating radar device for mineral exploration uses the shielding mechanism to shield and protect a user and the processor and prevent the equipment from being damaged by short circuit after being wetted, so that the safe and reliable ground penetrating radar device for mineral exploration is safer and more reliable to use, and the practicability of the device is improved.

The invention relates to an electric precipitator. The electric precipitator comprises a housing, an air inlet box, an exhaust box, an insulation box and ash hoppers, wherein the housing is fixed by a housing vertical beam and a housing cross beam; the air inlet box and the exhaust box are arranged at the two ends of the housing; the insulation box and the ash hoppers are arranged on the upper and lower sides on the outer side of the housing respectively; an anode hanging device is arranged in the housing; a flow guiding plate and a flow distribution plate perpendicular to the airflow direction are arranged in the air inlet box; a cathode hanging device is fixed at the upper end of the anode hanging device; the anode hanging device is connected with an anode frame; the anode frame is connected with an anode rapping device; the cathode hanging device is connected with a cathode frame; the cathode frame is connected with a cathode rapping device. Compared with the prior art, the electric precipitator solves the problems that the conventional electric precipitators are low in dust removal efficiency, poor in dust removal effect, slow in dust migration velocity, and much in blowing dust.

The invention discloses an electronic illuminating device under a humid environment. The electronic illuminating device comprises a drive cavity, a lamp room, a drive circuit assembly, a radiator, a top cover and an insulating part, wherein the drive cavity is arranged above the lamp room; the insulating part penetrates through the drive cavity and the lamp room; a ventilating cavity is formed inside the insulating part; the upper end of the insulating part is connected with the drive circuit assembly arranged in the drive cavity; the radiator is arranged in the drive cavity; an accommodating cavity is arranged in the center of the radiator; and a heat transfer plate is embedded into the bottom of the radiator. According to the electronic illuminating device disclosed by the invention, the ventilating cavity is arranged in the insulating part, the accommodating cavity is arranged in the radiator, an air vent is formed in the top cover, and the air vent, the accommodating cavity and the ventilating cavity are sequentially connected to form a radiating air channel which generates convection with outside air to dissipate heat in the drive cavity as quickly as possible, and a waterproof plate covers the outer part of the drive cavity, so that the problem that short-circuit damage, due to the fact that water drops gathered on a bathroom ceiling drop in the drive cavity, of the drive circuit assembly is avoided, and therefore, the service life of the device is prolonged.

A safety joint for experimental wire connection comprises a lantern-typed plug matched with a conductive metal hole and a connecting wire for connecting the lantern-typed plug. The safety joint for experimental wire connection further comprises an external insulating cylinder, a spring and an internal insulating cylinder. The external insulating cylinder is located outside the lantern-typed plug and is integrally formed with the lantern-typed plug, the internal insulating cylinder wraps the lantern-typed plug exposed outside the external insulating cylinder and is arranged in the inner cavity of the external insulating cylinder, the internal insulating cylinder can slide along the inner cavity of the external insulating cylinder, the spring is arranged between the upper end face of the internal insulating cylinder and the external insulating cylinder, a slide is arranged in the inner cavity of the external insulating cylinder, and a bead matched with the slide is arranged on the outer wall of the internal insulating cylinder. The joint is safe and reliable in use and can totally avoid the damage of short out to a circuit caused by careless operation, and a connection hole button which has existed in a circuit board dose not need to be modified, so that the safety joint for experimental wire connection is low in cost for popularization and use, and easy to achieve, improves the utilization rate of experimental equipment, and reduces the maintenance charge of the equipment.

The embodiment of the invention relates to the technical field of electronic devices, and discloses an electronic device water falling protection method and apparatus, an electronic device, and a computer readable storage medium. The electronic device water falling protection method comprises the following steps: detecting whether the electronic device is in a free falling state; if the electronicdevice is in the free falling state, detecting whether the current of a battery of the electronic device suddenly changes; and if the current value of the battery of the electronic device suddenly changes within a preset time, cutting off the power supply to the electronic device. In this way, after the electronic device falls into the water, the power supply of the electronic device is cut off,the device of the electronic device after falling into water is protected, the damage to the device is avoided, the service life of the device of the electronic device is prolonged, and the maintenance cost of the electronic device is greatly reduced. According to above method, the power supply of the battery is actively cut off by controlling the hardware via a software algorithm without using awaterproof material, thereby reducing the manufacturing cost and reducing the process steps required for the manufacturing.

The present invention discloses a fiber grating displacement sensor with a temperature measuring function for marine engineering. The sensor comprises a shell which is internally provided with two guide rails which are parallel to a longitudinal center line. The two guide rails are equipped with a slope sliding block. A contact which is matched with the slope surface of the slope sliding block is arranged on the slope surface. The contact is fixed at the front end of a constant strength beam which is parallel to the guide rails, and the back end of the constant strength beam is fixed in the shell. The lower surface of the constant strength beam is equipped with a fiber grating strain sensor. The shell is internally provided with a fiber grating temperature sensor which is connected to the fiber grating strain sensor by using a fiber. Two ends of the fiber are provided with provided with fiber joints. The front end of the slope sliding block is fixedly connected to a connection rod. According to the fiber grating displacement sensor, the synchronous measurement of temperature and displacement can be realized, the stability of a measurement signal is reliable, the long distance transmission of the measurement signal can be realized, and the fiber grating displacement sensor can be applied to a marine environment and is durable.

The invention relates to an intelligent telecommunication base station with the high flood-prevention capability based on the Internet of Things. The intelligent telecommunication base station comprises a base, a machine room and a room door. A flood-prevention mechanism is arranged in the machine room and comprises a direction adjusting assembly, a water pumping assembly, a flood-prevention plate, a flood-prevention assembly and a fixing mechanism; the flood-prevention assembly comprises a sand bag and a plurality of flood-prevention units; the flood-prevention units comprise air pumps, air cylinders, pistons and extrusion plates; the fixing mechanism comprises a pulling assembly, a central plate, two flow-guiding plates and two fixing assemblies; and each fixing assembly comprises a plurality of fixing units. According to the intelligent telecommunication base station with the high flood-prevention capability based on the Internet of Things, the sand bag is plugged on the room door through the flood-prevention mechanism, thus a water flow is prevented from entering the machine room, and the water flow permeating into the machine room is drained out of the machine room through thewater pumping assembly, so that the situation that equipment is in short circuit and is damaged are avoided; and in addition, the position of the flood-prevention plate is fixed through the fixing mechanism, so that the sand bag can closely abut against the room door, the speed of the water flow for permeating into the machine room is greatly decreased, and facilities in the machine room are protected.

The invention belongs to the technical field of oil production, and particularly relates to an ultrasonic variable-frequency blockage removing, oil outlet increasing and injection increasing device. The ultrasonic variable-frequency blockage removing, oil outlet increasing and injection increasing device comprises a cable, a cable connecting body, a protection cylinder, piezoelectric ceramic and a pressure balance rubber cylinder and further comprises a sealing piston. The cable is connected to the upper side of the cable connecting body through a cable connector assembly. The protection cylinder is fixedly connected to the outer side of the lower end of the cable connecting body. The piezoelectric ceramic is pre-tightened and fixed to the inner side of the protection cylinder through a gland, and copper skin is attached to the inner wall of the piezoelectric ceramic and connected with the cable through a wire and the cable connector assembly, so that power supply is achieved. A wire passing pipe is mounted in the center of the lower end of the cable connector body. The wire penetrates through the center of the wire passing pipe and a wire passing hole in the pipe wall of the wire passing pipe. The sealing piston is mounted in a piston sleeve and can slide in the piston sleeve, and the piston sleeve is connected to the lower end of the protection cylinder through a middle connecting body. The pressure balance rubber cylinder is of a cylindrical structure with the two ends being open.

The invention provides a dynamic waterproof method for a light fitting, comprising an aeration pipe with one end communicated with an inner cavity of a shell of the light fitting and the other end extended to dry place. Because the structure is adopted, when the temperature of the light fitting rises, and the pressure inside the shell of the light fitting increases, air in the shell of the light fitting is discharged through the aeration pipe for decompressing; when the temperature of the light fitting decreases, and the pressure in the shell of the light fitting reduces, air in the dry place enters the inside of the light fitting through the aeration pipe so as to dynamically balance the air pressure inside and outside the shell of the light fitting and eliminate the deformation of the shell of the light fitting suffered by air pressure, thereby preventing the decline of sealing property of the light fitting, and preventing damages of the light fitting caused by the decline of the sealing property of the light fitting, such as water seepage, creepage and short circuit.

The invention discloses an electric automobile charging pile. The electric automobile charging pile structurally comprises a top cover, a display screen, a handle, a machine body, a cooling opening, aconnecting wire and a plug, the bottom end of the top cover and the top end of the machine body are welded, the display screen is embedded into the front end of the machine body and electrically connected with the machine body, and the cooling opening is formed in the right end of the machine body and movably connected with the machine body. By improving the structure of equipment, a correcting driving mechanism can drive a power supply assembly to move to be connected with a charging socket of an automobile at a correct position, the exposed plug is prevented from rubbing and colliding withthe outer end of the socket and being damaged, meanwhile, the correcting driving mechanism can drive a sealing mechanism to expand outwards to seal the extending connecting position of the socket, andwater vapor is prevented from permeating into a charging connecting position and short-circuiting and generating damage in wet weather.

The invention provides an engine power output rotary shaft torque signal matching box resistance detection circuit. The engine power output rotary shaft torque signal matching box resistance detection circuit comprises a 5 V power supply unit, a -3.75 V power supply unit, a shaft torque signal matching box deviation resistor, a shaft torque signal matching box slope resistor, a slope resistor detection unit, a deviation resistor detection unit and an AD conversion unit. The 5 V power supply unit feeds a 5 V reference voltage to the AD conversion unit through the deviation resistor detection unit and the slope resistor detection unit for digital-to-analog conversion, the -3.75 V power supply unit is connected with the deviation resistor and the slope resistor in parallel to form a closed loop, the deviation resistor is in parallel connection with a connecting point between the 5 V power supply unit and the slope resistor, the 5 V reference voltage is fed to the AD conversion unit through the slope resistor to be processed through digital-to-analog conversion, and an engine electronic controller calculates the resistance value of the deviation resistor and the resistance value of the slope resistor according to the voltage obtained after conversion of the AD conversion unit and a resistor series connection formula. According to the engine power output rotary shaft torque signal matching box resistance detection circuit, the problems that working current of a rotary shaft torque signal matching box is overlarge, high temperature is generated, and an external matching box deviation resistor is damaged due to a short circuit are solved.

The present invention discloses a decoration lamp set with extensible and replaceable light-emitting diodes, which comprises an electrical connecting line, an electrical connector, a circuit base, a light-emitting diode base, a replaceable light-emitting diode and a replaceable lampshade, wherein the light-emitting diode base is sealed on the circuit base to prevent short circuit damage cuased bypermeating water; the electrical connector combines with the other electrical connector of the other light-emitting diode decoration lamp set with a connection mode; the light-emitting diode can be replaced by a different color light-emitting diode as required, the lampshade can be replaced by an other lampshade having different modeling, thereby solving the defects that all the traditional light-emitting diode decoration lamp set are the same color, modeling and length, and are only used in a special occasion and atmosphere.

The invention relates to the technical field of electrical equipment and in particular to an electronic component grounding device and method. The electronic component grounding device includes a PCBequipped with a mounting notch used for installing an electronic component. A grounding reed is disposed in the mounting notch. The inner side and the outer side of the grounding reed are in contact with the electronic component and the PCB respectively. The mounting notch is disposed on the PCB of the grounding device so that the electronic component is in tight contact with the PCB via the grounding reed. The device and method solve a problem in the prior art that the electronic component mounted on a circuit board is poorly grounded. The electronic component can be easily mounted on the PCB, has a good grounding effect and is ensured in operation and use safety.

The invention discloses a transformer terminal box with a damp-proof function. The box comprises a box body and a sliding rail; a control box is fixedly connected to the bottom of the box body, heat dissipation holes are formed in the two sides of the box body, mounting assemblies are fixedly connected to the two sides of the inner wall of the box body, and a moving plate is slidably connected between the two sides of the inner wall of each mounting assembly. According to the invention, the box can achieve a moisture-proof function well; a activated carbon plate is arranged at the heat dissipation holes, so moisture in the air can be adsorbed, and parts in the box body are well protected, thereby preventing the moisture from causing a short circuit fault and damages; and the humidity in the box body can be monitored through a humidity sensor arranged in the box body, when the humidity exceeds a set value, moisture in the box body can be rapidly discharged by starting a suction pump, moisture prevention in the box body is achieved, the box body is well protected, and then the practicability of the device is improved.

The invention discloses a solar energy high-efficient mosquito killer lamp, which comprises a supporting rod, a solar energy panel component and a mosquito killer lamp component; the bottom part of the supporting rod is equipped and fixed with the solar energy panel component; a group of mosquito killer lamp component electrically connected with the solar energy panel component is fixed on the supporting rod through an installing base; the mosquito killer lamp component comprises a mosquito killing shell body; a venting hole is arranged on the top face of the mosquito killing shell body; the lower part of the venting hole is provided with a fan, and an UV lamp tube is arranged beneath the fan; a mosquito entering hole is arranged on the outer wall of the mosquito killing shell body, the lower end of the mosquito killing shell body is provided with a funnel type conical cover; the opening of the upper end of the conical cover is equipped with an electric shock component, and the electric shock component comprises an electric shock frame and two layers of electric shock wire meshes installed in the electric shock frame; two layers of electric shock wire meshes are connected with positive and negative output ends of the solar energy panel component. The solar energy high-efficient mosquito killer lamp is reasonable in structural design, high in solar energy utilization rate, and can completely kill the mosquito and effectively keep out wind and rain; therefore, the safety performance of using is high.